*stellarii
a vibe coding venture studio
Creative ideas at the speed of agentic engineering.
The Studio
What is *Stellarii?
vibe coding /vīb ˈkōdiNG/ noun
A development approach where humans direct AI agents to build software through natural language and iterative collaboration.
Collins Word of the Year, 2025
*Stellarii is a vibe coding venture studio. Rikii Mastrodonato Vignau shipping consumer AI products that used to need a team of fifty — apps that land on someone's phone or in their browser.
AI hasn't just changed how we write code — it's changed how we produce. Film, music, writing, design, software. The tools that used to require massive budgets and large teams now fit in a single studio moving fast.
Every product starts from the same belief: AI democratizes creative production. The studio exists to prove it.
Stellarii ships the consumer side. Trinity — the sibling venture studio co-operated with Sasha Lehmann — ships the B2B side.
Portfolio
What we're building
Products for people who build, move, and think for a living.
HYPPO
Wellness tracking
Emily AI
AI executive assistant
CODEX
AI ops center for vibe coders and indie hackers
Future pipeline includes products in business intelligence, education, and advisory.
About
The founder
Rikii Mastrodonato — COO at a boutique financial planning firm. BFA in New Genres, San Francisco Art Institute. MBA in Entrepreneurship & Strategic Innovation, University of Illinois. Based in Lisbon, Portugal — with roots in the San Francisco Bay Area.
*Stellarii started from a simple observation: AI doesn't just change what we build — it changes how we build it. One person with the right methodology can now do what used to take a team of fifty. The studio is proof of that thesis.
Most of the team is based in Europe. The name is from Latin — stella, star.
Commissions
Have a product idea?
We research, design, and build AI products for select partners. From concept to launch.